many thanks,

I have put a small spring behind the qev's diaphragm, upon a test at about 90 psi it sill vented almost all of the air, should i keep trying to place stronger springs or are my test pressures too low to allow the spring to do anything?

Greetings everyone, short time lurker, first time poster here. In the past I have built a few combustion cannons and couple of sprinkler valve pneumatics but after finding this site decided to have a go at building a QEV multishot. I have mashed together a 1/2" QEV, a 1/2" slide, a schrader valve, s...